At-risk patient documentation and naloxone dispersal for a rural statewide EMS "Naloxone Leave Behind" program

For successful Naloxone Leave Behind (NLB) programs, Emergency Medical Services (EMS) must identify patients at-risk for opioid overdose. We describe the first year of Vermont's NLB program and report rates of EMS documentation of at-risk patients with subsequent distribution of NLB kits in the subgroup of those refusing transport to an emergency department (ED).

This retrospective cohort review of all EMS encounters over 1 year compared on-scene EMS documented to retrospective chart reviewidentified at-risk patients eligible for NLB kit dispersal. EMS was educated to identify at-risk patients through statewide mandatory training modules. At-risk patients were identified by electronic chart review using the same training criteria. As per protocol, patients identified as at-risk by EMS who refuse ED transport are eligible for NLB. NLB-appropriate patients by retrospective chart review without NLB protocol use documentation by EMS were considered "missed."

Of 110,701 EMS encounters, 2507 (2.4%) were at-risk by chart review. Among these, 793 refused transport to an ED. In this chart-review at-risk non-transported group, EMS documented 407 (51.3%) patients as at-risk by documenting use of the NLB protocol. Of these 407, EMS provided 141 (34.6%) with NLB kits. Fifteen (3.7%) patients refused kits. There were 386 (48.7%) potentially "missed" opportunities for NLB dispersal.

EMS documented 51.3% of patients eligible for NLB dispersal, with 34.6% receiving kits. There was no documentation for 48.7% of chart-review at-risk patients, suggesting "missed" distribution opportunities. This study highlights the need for improved EMS identification of at-risk patients, EMS documentation adherence, and NLB kit provision.